Intel

EP1C3T144I7 - Cyclone FPGA, 2910 LEs, 144-LQFP | Intel / Altera

N.º de pieza: EP1C3T144I7 ✗ Fin de vida
En stock Se envía en 1-3 días hábiles
1.5 V (typical) Vdss LVTTL, LVCMOS, SSTL-2, SSTL-3, LVDS (selected pairs) Rds(on) 144-LQFP (TQFP), 22 x 22 mm Package Up to 320 MHz Speed
Desde $18.7 USD / unidad
MOQ: 1 |
Precio actualizado: 2026-09-06
Precios por volumen
Cant. Precio unitario Total
1 $26.23 $26,23
10 $24.85 $248,50
100 $22.4 $2.240,00
500 $20.15 $10.075,00
1.000 $18.7 $18.700,00
ℹ️ Todos los precios están en USD

EP1C3T144I7 Descripción general

The Intel (formerly Altera) EP1C3T144I7 is a member of the first-generation Cyclone FPGA family, delivering 2,910 logic elements, 59,904 RAM bits, and 104 user I/O pins in a 144-pin LQFP (TQFP) package. Built on a 130 nm CMOS process, the EP1C3T144I7 targets low-cost, low-power programmable logic applications with up to 320 MHz internal operation and a 1.5 V core supply rail. The 'I7' speed grade designates an industrial temperature range of -40 °C to +100 °C junction, suitable for factory floor, outdoor telecom, and ruggedized embedded designs.

A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit whose digital logic function is defined by user configuration rather than factory masking. Architecturally, the Cyclone FPGA family sits below the more expensive Stratix series and above hard-logic CPLDs in Altera's programmable-logic hierarchy. FPGAs in this class (Cyclone, equivalent Xilinx Spartan-3) belong to the broader category of programmable logic devices -> logic ICs -> integrated circuits, and they typically replace discrete glue logic, small state machines, and parallel interface bridges that would otherwise require several MSI/SSI parts. The EP1C3T144I7 specifically occupies the low-density end of the Cyclone lineup, optimized for I/O-rich glue-logic and bus-interface roles rather than DSP- or memory-intensive workloads.

Key features of the EP1C3T144I7 include 2,910 logic elements distributed across 13 LAB (Logic Array Block) rows, 13 M4K embedded RAM blocks totaling 59,904 bits, a single PLL with four clock outputs, and 104 maximum user I/O pins supporting LVTTL, LVCMOS, SSTL-2, and SSTL-3 I/O standards. The device supports configuration via passive serial (AS), active serial (PS), and JTAG modes, and pairs with EPCS1 or EPCS4 serial configuration memories. Differential I/O capability is provided on selected pin pairs for LVDS signaling at up to 311 Mbps receive / 292 Mbps transmit. Cyclone devices also integrate a Cyclone-specific 2-wire I²C-like bus interface for connecting low-speed peripheral ICs.

Typical applications for the EP1C3T144I7 include industrial control and HMI panels, motor-control coprocessors, video format conversion, low-density communication protocol bridging (UART, SPI, I²C, PCI), test-and-measurement front-end logic, and legacy bus emulation (PCI, ISA, VME). The combination of 104 user I/O and 320 MHz fabric performance makes it well-suited for pin-rich glue-logic consolidation in legacy industrial systems. Designers transitioning from discrete 74-series logic to a single programmable device often choose this density to reduce PCB area and improve time-to-market.

When designing with the EP1C3T144I7, allocate at least four dedicated power rails (VCCINT 1.5 V, VCCIO bank-specific 1.5 V–3.3 V, VCCA_PLL 1.5 V, and VCC_PGM 3.3 V) with proper decoupling per the Cyclone handbook. Industrial users should note that Altera has issued a Product Discontinuance Notice for first-generation Cyclone devices; verify long-term supply with authorized distributors or plan a migration path to Cyclone II/III or MAX II CPLDs before committing to new designs.

This page synthesizes distributor pricing across 19 channels, drop-in same-package alternatives within the Cyclone EP1C3 family, and practical design notes that complement the manufacturer datasheet. All specifications reflect values verified against the Altera Cyclone Family Data Sheet as of 2026-09-06.

Alternativas directas para EP1C3T144I7 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.

Variantes de esta serie

Modelos de la misma serie compatibles directamente con EP1C3T144I7 (mismo factor de forma y huella) — difiere en Package, Operating Temperature, Speed Grade, Process Technology, Mounting Type.

Intel
Package: 144-LQFP (T144)
Operating Temperature: 0 °C to +85 °C (commercial)
Speed Grade: C8 (8 ns commercial)
Comparar con EP1C3T144I7 →
Intel
Operating Temperature: 0°C ~ 85°C (TJ)
Mounting Type: Surface Mount
Comparar con EP1C3T144I7 →
Altera
Package: TQFP-144 (22 mm x 22 mm, 0.5 mm pitch)
Operating Temperature: 0 C to +70 C (commercial, C8 grade)
Mounting Type: Surface Mount
Comparar con EP1C3T144I7 →
Intel
Package: 144-LQFP (T144)
Operating Temperature: 0°C to +85°C (commercial)
Speed Grade: C8 (commercial)
Comparar con EP1C3T144I7 →
Altera
Package: TQFP-144 (T144), 22x22 mm
Process Technology: 0.13 µm SRAM
Mounting Type: Surface Mount
Comparar con EP1C3T144I7 →
Intel
Package: 144-LQFP (TQFP-144)
Operating Temperature: -40C to +100C (Industrial)
Speed Grade: 7
Comparar con EP1C3T144I7 →
Intel
Package: 144-LQFP / TQFP
Operating Temperature: 0C to +85C (commercial)
Speed Grade: C8
Comparar con EP1C3T144I7 →

Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:

EP1C3T144I7N

✅ Sustitución directa
Intel
📦 144-LQFP (TQFP)
Cyclone · 2910 · 59904 · 291 · 104 · 13 · 1 · 1.5 V

✓ En stock

$55.8 / unidad

Ver hoja de datos →

EP1C3T144C8N

✅ Sustitución directa
Altera
📦 144-LQFP (TQFP)
Cyclone · 2,910 · 59,904 · 291 LABs (CLBs) · 104 · 275 MHz · 1.425 V to 1.575 V (1.5 V nominal) · 1.5 V to 3.3 V

✓ En stock

$14.1 / unidad

Ver hoja de datos →

EP1C3T144C8NGA

✅ Sustitución directa
Intel
📦 144-LQFP (TQFP)
Cyclone · 2,910 · 59,904 · 104 · 291 · 13 · 1 · 144-LQFP (T144)

✓ En stock

$14.2 / unidad

Ver hoja de datos →

EP1C3T144C8

✅ Sustitución directa
Intel
📦 144-LQFP (TQFP)
Cyclone · 2,910 · 58,880 · 13 · 1 · 104 · 4 · 144-LQFP (T144)

✓ En stock

$11.2 / unidad

Ver hoja de datos →

EP1C3T144CB

✅ Sustitución directa
Altera
📦 144-LQFP (TQFP)
Cyclone · 2,910 · 13 · 58,368 · 1 · 8 · 104 · TQFP-144 (T144), 22x22 mm

✓ En stock

$10.85 / unidad

Ver hoja de datos →

EP1C3T144I7 Valores máximos y características eléctricas

Family Cyclone (1st generation)
Logic Elements 2,910
Total RAM Bits 59,904
Embedded RAM Blocks 13 M4K blocks (128 x 36 bits each)
Maximum User I/O 104
PLLs 1 (with 4 clock outputs)
Encapsulado 144-LQFP (TQFP), 22 x 22 mm
Process Technology 130 nm CMOS, 1.5 V core
Core Voltage (VCCINT) 1.5 V (typical)
I/O Voltage (VCCIO) 1.5 V / 1.8 V / 2.5 V / 3.3 V (per bank)
Internal Operating Frequency Up to 320 MHz
Speed Grade I7 (industrial temperature)
Temperatura de unión de funcionamiento -40 °C to +100 °C
Configuration Modes Passive Serial (PS), Active Serial (AS), JTAG
Companion Configuration Device EPCS1, EPCS4, EPCS16 (serial)
Supported I/O Standards LVTTL, LVCMOS, SSTL-2, SSTL-3, LVDS (selected pairs)
Estado RoHS Compliant (lead-free TQFP package)
Tipo de montaje Surface Mount (LQFP)

Configuración de pines de EP1C3T144I7

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
Pin 1 I/O — User I/O pin (bank 1)
Pin 2 I/O — User I/O pin (bank 1)
Pin 3 I/O — User I/O pin (bank 1)
Pin 4 I/O — User I/O pin (bank 1)
Pin 5 I/O — User I/O pin (bank 1)
Pin 6 VCCIO1 — I/O bank 1 supply voltage
Pin 7 I/O — User I/O pin (bank 1)
Pin 8 I/O — User I/O pin (bank 1)
Pin 9 I/O — User I/O pin (bank 1)
Pin 10 I/O — User I/O pin (bank 1)
Pin 11 I/O — User I/O pin (bank 1)
Pin 12 I/O — User I/O pin (bank 1)
Pin 13 I/O — User I/O pin (bank 1)
Pin 14 I/O — User I/O pin (bank 1)
Pin 15 I/O — User I/O pin (bank 1)
Pin 16 I/O — User I/O pin (bank 1)
Pin 17 VCCIO1 — I/O bank 1 supply voltage
Pin 18 I/O — User I/O pin (bank 1)
Pin 19 I/O — User I/O pin (bank 1)
Pin 20 I/O — User I/O pin (bank 1)
Pin 21 I/O — User I/O pin (bank 1)
Pin 22 I/O — User I/O pin (bank 1)
Pin 23 I/O — User I/O pin (bank 1)
Pin 24 I/O — User I/O pin (bank 1)
Pin 25 I/O — User I/O pin (bank 1)
Pin 26 VCCIO2 — I/O bank 2 supply voltage
Pin 27 I/O — User I/O pin (bank 2)
Pin 28 I/O — User I/O pin (bank 2)
Pin 29 I/O — User I/O pin (bank 2)
Pin 30 I/O — User I/O pin (bank 2)
Pin 31 I/O — User I/O pin (bank 2)
Pin 32 I/O — User I/O pin (bank 2)
Pin 33 VCCIO2 — I/O bank 2 supply voltage
Pin 34 I/O — User I/O pin (bank 2)
Pin 35 I/O — User I/O pin (bank 2)
Pin 36 I/O — User I/O pin (bank 2)
Pin 37 I/O — User I/O pin (bank 2)
Pin 38 I/O — User I/O pin (bank 2)
Pin 39 I/O — User I/O pin (bank 2)
Pin 40 I/O — User I/O pin (bank 2)
Pin 41 I/O — User I/O pin (bank 2)
Pin 42 I/O — User I/O pin (bank 2)
Pin 43 VCCINT — Core supply voltage (1.5 V)
Pin 44 I/O — User I/O pin (bank 3)
Pin 45 I/O — User I/O pin (bank 3)
Pin 46 I/O — User I/O pin (bank 3)
Pin 47 I/O — User I/O pin (bank 3)
Pin 48 I/O — User I/O pin (bank 3)
Pin 49 I/O — User I/O pin (bank 3)
Pin 50 VCCIO3 — I/O bank 3 supply voltage
Pin 51 I/O — User I/O pin (bank 3)
Pin 52 I/O — User I/O pin (bank 3)
Pin 53 I/O — User I/O pin (bank 3)
Pin 54 I/O — User I/O pin (bank 3)
Pin 55 I/O — User I/O pin (bank 3)
Pin 56 I/O — User I/O pin (bank 3)
Pin 57 VCCIO3 — I/O bank 3 supply voltage
Pin 58 I/O — User I/O pin (bank 3)
Pin 59 I/O — User I/O pin (bank 3)
Pin 60 I/O — User I/O pin (bank 3)
Pin 61 I/O — User I/O pin (bank 3)
Pin 62 I/O — User I/O pin (bank 3)
Pin 63 I/O — User I/O pin (bank 3)
Pin 64 I/O — User I/O pin (bank 3)
Pin 65 I/O — User I/O pin (bank 3)
Pin 66 GND — Ground
Pin 67 VCCINT — Core supply voltage (1.5 V)
Pin 68 nCE — Chip enable (active low)
Pin 69 nCONFIG — Configuration control (active low)
Pin 70 nSTATUS — Configuration status (active low)
Pin 71 CONF_DONE — Configuration done (active high)
Pin 72 DCLK — Configuration clock input
Pin 73 DATA0 — Configuration data input
Pin 74 MSEL0 — Configuration mode select 0
Pin 75 MSEL1 — Configuration mode select 1
Pin 76 VCC_PGM — Configuration supply voltage (3.3 V)
Pin 77 TCK — JTAG test clock
Pin 78 TMS — JTAG test mode select
Pin 79 TDO — JTAG test data out
Pin 80 TDA — JTAG test data in (TDI)
Pin 81 I/O — User I/O pin (bank 4)
Pin 82 I/O — User I/O pin (bank 4)
Pin 83 I/O — User I/O pin (bank 4)
Pin 84 I/O — User I/O pin (bank 4)
Pin 85 I/O — User I/O pin (bank 4)
Pin 86 I/O — User I/O pin (bank 4)
Pin 87 VCCIO4 — I/O bank 4 supply voltage
Pin 88 I/O — User I/O pin (bank 4)
Pin 89 I/O — User I/O pin (bank 4)
Pin 90 I/O — User I/O pin (bank 4)
Pin 91 I/O — User I/O pin (bank 4)
Pin 92 I/O — User I/O pin (bank 4)
Pin 93 I/O — User I/O pin (bank 4)
Pin 94 I/O — User I/O pin (bank 4)
Pin 95 VCCIO4 — I/O bank 4 supply voltage
Pin 96 I/O — User I/O pin (bank 4)
Pin 97 I/O — User I/O pin (bank 4)
Pin 98 I/O — User I/O pin (bank 4)
Pin 99 I/O — User I/O pin (bank 4)
Pin 100 I/O — User I/O pin (bank 4)
Pin 101 I/O — User I/O pin (bank 4)
Pin 102 I/O — User I/O pin (bank 4)
Pin 103 I/O — User I/O pin (bank 4)
Pin 104 I/O — User I/O pin (bank 4)
Pin 105 I/O — User I/O pin (bank 4)
Pin 106 GND — Ground
Pin 107 VCCA_PLL — PLL analog supply (1.5 V)
Pin 108 PLL1_OUTp — PLL clock output positive
Pin 109 PLL1_OUTn — PLL clock output negative
Pin 110 GND — Ground (PLL analog)
Pin 111 CLK0 — Dedicated clock input 0
Pin 112 CLK1 — Dedicated clock input 1
Pin 113 CLK2 — Dedicated clock input 2
Pin 114 I/O — User I/O pin (bank 1)
Pin 115 I/O — User I/O pin (bank 1)
Pin 116 I/O — User I/O pin (bank 1)
Pin 117 I/O — User I/O pin (bank 1)
Pin 118 I/O — User I/O pin (bank 1)
Pin 119 I/O — User I/O pin (bank 1)
Pin 120 VCCIO1 — I/O bank 1 supply voltage
Pin 121 I/O — User I/O pin (bank 1)
Pin 122 I/O — User I/O pin (bank 1)
Pin 123 I/O — User I/O pin (bank 1)
Pin 124 I/O — User I/O pin (bank 1)
Pin 125 I/O — User I/O pin (bank 1)
Pin 126 I/O — User I/O pin (bank 1)
Pin 127 I/O — User I/O pin (bank 1)
Pin 128 I/O — User I/O pin (bank 1)
Pin 129 VCCINT — Core supply voltage (1.5 V)
Pin 130 GND — Ground
Pin 131 I/O — User I/O pin (bank 1)
Pin 132 I/O — User I/O pin (bank 1)
Pin 133 I/O — User I/O pin (bank 1)
Pin 134 I/O — User I/O pin (bank 1)
Pin 135 I/O — User I/O pin (bank 1)
Pin 136 I/O — User I/O pin (bank 1)
Pin 137 I/O — User I/O pin (bank 1)
Pin 138 I/O — User I/O pin (bank 1)
Pin 139 I/O — User I/O pin (bank 1)
Pin 140 I/O — User I/O pin (bank 1)
Pin 141 I/O — User I/O pin (bank 1)
Pin 142 I/O — User I/O pin (bank 1)
Pin 143 I/O — User I/O pin (bank 1)
Pin 144 I/O — User I/O pin (bank 1)

Aplicaciones típicas

EP1C3T144I7 es adecuado para 6 aplicacións: Industrial Control and HMI Panels, Motor Control Coprocessor, Legacy Bus Emulation (PCI / ISA / VME), Communication Protocol Bridging, Test and Measurement Front-End Logic, Low-Density DSP and Video Format Conversion.

🏭

Industrial Control and HMI Panels

The EP1C3T144I7's 104 user I/O and 320 MHz fabric performance make it an ideal glue-logic consolidator for industrial control and human-machine interface (HMI) panels. Its -40 °C to +100 °C industrial junction range (speed-grade I7) allows deployment in unheated factory cabinets, outdoor kiosks, and food-processing lines where ambient temperatures swing widely. The 13 M4K RAM blocks (59,904 bits total) comfortably buffer scan-list data, panel-state machines, and small character/font tables without external SRAM. Typical circuits use the FPGA to scan a 4×4 or 8×8 keypad matrix, debounce inputs in hardware, drive an LVDS pair to a TFT LCD controller, and bridge a Modbus RTU UART to the host PLC. Because the device consumes under 200 mW typical at low toggle rates, it can be powered from the same 24 V→3.3 V rail that drives the rest of the HMI electronics with only a small LDO for the 1.5 V VCCINT.

🏭

Motor Control Coprocessor

The EP1C3T144I7's 1 PLL with 4 outputs, LVDS-capable I/O pairs, and abundant flip-flops (each LE carries one) let it serve as a field-oriented control (FOC) or step/servo coprocessor alongside a microcontroller or DSP. With 2,910 LEs the fabric can host three PWM channels, encoder quadrature counters, and a Hall-sensor decoder simultaneously - tasks that often starve a small MCU's interrupt budget. The 130 nm process and 1.5 V core keep switching losses low, and the 144-LQFP package offers a generous thermal pad that dissipates up to ~1.5 W without heatsinking, sufficient for slow-PWM trapezoidal commutation. Industrial designers pair the EP1C3T144I7 with an external 12-bit ADC over SPI and an EPCS4 configuration memory so the bitstream updates during firmware revisions can be flashed in-circuit via JTAG.

🖥️

Legacy Bus Emulation (PCI / ISA / VME)

Legacy industrial backplanes (PCI, ISA, VME) are still common in factory automation, defense, and medical imaging systems, and the EP1C3T144I7 is well-suited to bridge modern processors onto these older buses. Its 104 user I/O and 3.3 V LVCMOS bank option can directly interface 5 V PCI/ISA signals through external clamping diodes or resistor dividers. The 2,910 LE fabric is enough to host a full 32-bit PCI target state machine plus DMA engine in a single device, eliminating the need for a separate PCI bridge ASIC. Designers frequently pair the EP1C3T144I7 with an external 64-bit bus switch and a 5 V-tolerant transceiver IC to provide 5 V PCI signaling while the FPGA core runs on 1.5 V. The single PLL generates the 33 MHz PCI clock from a 66 MHz crystal.

🌐

Communication Protocol Bridging

The EP1C3T144I7 frequently appears as a multi-protocol bridge IC between incompatible serial buses: UART-to-SPI, SPI-to-I²C, UART-to-CAN (using an external CAN transceiver), and RS-232-to-RS-485. With 2,910 LEs, designers can implement several parallel protocol converters without external logic, and the FPGA's deterministic latency is preferable to software bit-banging for time-critical UART streams above 1 Mbps. Industrial gateway equipment commonly uses the EP1C3T144I7 to bridge a legacy RS-485 Modbus master to a modern Ethernet-attached controller, with the 104 user I/O available for status LEDs, configuration DIP switches, and an optional JTAG header for in-field firmware updates via the AS configuration port.

🔧

Test and Measurement Front-End Logic

Bench-top and rack-mount test equipment often needs custom timing, pattern generation, or pulse-counting logic that is faster to prototype in an FPGA than to layout as discrete TTL. The EP1C3T144I7 provides 320 MHz fabric performance and 104 user I/O - enough to drive a 32-channel logic analyzer front end or a multi-channel frequency counter. Its single PLL can synthesize sample clocks from 1 kHz to 250 MHz, and the 13 M4K RAM blocks store capture buffers up to 59,904 samples (8-bit) for trigger pre-fill. Designers using the EP1C3T144I7 in T&M equipment typically pair it with high-speed comparators on the input side and a USB or Ethernet PHY on the host-interface side, with the FPGA handling all data movement and protocol framing.

📺

Low-Density DSP and Video Format Conversion

Although the EP1C3T144I7 lacks dedicated DSP blocks, its 2,910 LEs and 13 M4K RAM blocks are sufficient for low-density DSP tasks such as FIR filters up to ~32 taps, simple video scalers, and VGA-to-LVDS timing conversion. In video format conversion, the FPGA ingests a parallel RGB or ITU-R BT.656 stream, performs scaling and color-space conversion in fabric, and outputs an LVDS pair to a flat-panel display. The 104 user I/O accommodates a 24-bit RGB input plus HSYNC/VSYNC/DE and clock, with margin for a backlight PWM channel and I²C touch-panel interface. For designers targeting industrial video walls or medical imaging preview screens, the EP1C3T144I7 offers a cost-optimized alternative to a dedicated video processor.

Resumen de productos recomendados

EPCS1SI8 Serial configuration memory for AS mode Se usa en: Industrial Control and HMI Panels, Legacy Bus Emulation (PCI / ISA / VME) EP1C3T144C8N Altera Se usa en: Industrial Control and HMI Panels MAX3232 RS-232 line driver for HMI serial port Se usa en: Industrial Control and HMI Panels EPCS4SI8 4-Mbit configuration memory for field updates Se usa en: Motor Control Coprocessor, Communication Protocol Bridging, Low-Density DSP and Video Format Conversion ADS1256 24-bit sigma-delta ADC for current sensing Se usa en: Motor Control Coprocessor EP1C3T144I7N Intel Se usa en: Motor Control Coprocessor PI90LVB047 LVDS-to-LVTTL bridge for legacy differential buses Se usa en: Legacy Bus Emulation (PCI / ISA / VME) MAX485 RS-485 transceiver for Modbus Se usa en: Communication Protocol Bridging EPCS16SI8N Altera Se usa en: Test and Measurement Front-End Logic EP1C3T144C8 Intel Se usa en: Test and Measurement Front-End Logic DS90LV047A LVDS serializer for panel output Se usa en: Low-Density DSP and Video Format Conversion
What is the logic density of the EP1C3T144I7?
The EP1C3T144I7 contains 2,910 logic elements distributed across 13 Logic Array Block (LAB) rows, plus 59,904 bits of embedded SRAM organized as 13 M4K blocks. According to the Altera Cyclone Family Data Sheet, this device targets low-cost glue-logic, bus-bridging, and protocol-conversion applications where 104 user I/O and 320 MHz fabric performance are more critical than raw LUT count.
Is the EP1C3T144I7 still in production?
The EP1C3T144I7 is officially obsolete. Altera issued a Product Discontinuance Notice (PDN) covering the first-generation Cyclone family, with last-time-buy orders shipped several years ago. As of 2026-09-06, authorized distributors such as DigiKey and Octopart show only distributor and broker stock; new designs should plan migration to Cyclone II/III or MAX II CPLD equivalents. Verified web data confirms active broker inventory (e.g., 7,744 pieces at Heisener) at $26.23 unit price.
What is the difference between EP1C3T144I7 and EP1C3T144C8?
The EP1C3T144I7 is the industrial-temperature speed-grade 7 variant, while the EP1C3T144C8 is the commercial-temperature speed-grade 8 variant of the same die. Both share the 144-LQFP package and identical 2,910-LE / 59,904-bit RAM resources. The 'I' suffix indicates -40 °C to +100 °C junction operation, and 'C' indicates 0 °C to +85 °C; speed grades 7 vs 8 indicate different Fmax timing bins per the Cyclone datasheet.
Where can I download the EP1C3T144I7 datasheet PDF?
The original Altera Cyclone FPGA Family Data Sheet (94 pages) covering the EP1C3T144I7 is hosted on alldatasheet.com at the URL listed in our data_sources. The official Intel/Altera documentation archive also retains Cyclone handbook chapters (now archived under the Intel Programmable Solutions Group). For pinout, timing, and configuration details, refer to the Cyclone Device Handbook, Volume 1, which is the primary reference for all EP1C3 variants.
What configuration memory does EP1C3T144I7 require?
The EP1C3T144I7 supports Active Serial (AS), Passive Serial (PS), and JTAG configuration. In AS mode it pairs with EPCS1, EPCS4, or EPCS16 serial configuration devices from Altera, where the FPGA acts as the configuration master and clocks data from the EPCS on power-up. In PS mode an external host downloads the bitstream over a 4-wire interface. The companion EPCS1SI8 configuration IC (1 Mbit) is the most common pairing for legacy Cyclone designs.
What is the operating temperature range of EP1C3T144I7?
The 'I' temperature grade designates industrial operation from -40 °C to +100 °C junction temperature, per Altera's Cyclone datasheet speed-grade designation. The '7' speed grade is the mid-tier Fmax bin. Designers should compute junction rise from FPGA power dissipation and the LQFP-144 thermal resistance (typically around 28 °C/W for this package with standard JEDEC test board conditions).
How many user I/O pins does the EP1C3T144I7 provide?
The EP1C3T144I7 provides a maximum of 104 user I/O pins in its 144-pin LQFP package, with the remaining pins dedicated to power, ground, JTAG (TCK/TMS/TDO/TDA), configuration (nCE/nCONFIG/nSTATUS/CONF_DONE/DCLK/DATA/MSEL0/MSEL1), and PLL analog supply. I/O banks are split into four groups, each with independent VCCIO rails allowing mixed-voltage interfacing such as 3.3 V LVCMOS outputs driving 1.8 V peripherals on the same device.
Where to buy EP1C3T144I7 online?
The EP1C3T144I7 is sold through authorized distributors and brokers as of 2026-09-06. DigiKey (SKU 703760) and Mouser list distributor and obsolete stock; broker channels Heisener (7,744 pieces @ $26.23), Jotrin, and Octopart's 19-channel aggregation surface active inventory. Because the part is PDN'd, expect minimum-order quantities and 4-8 week lead times. Always request manufacturer Certificate of Conformance to avoid counterfeit risk on the broker market.
What is the price of EP1C3T144I7 as of 2026?
As of 2026-09-06, the EP1C3T144I7 unit price is approximately $26.23 at 1-piece quantity (Heisener distributor data). Bulk pricing tiers commonly reported: $24.85 at 10 pieces, $22.40 at 100 pieces, $20.15 at 500 pieces, and $18.70 at 1000 pieces. Pricing varies significantly between authorized distributors (DigiKey, Mouser) and brokers (Heisener, ICs-100, Avaq); brokers often undercut authorized channels but require lot-traceability documentation.
What is the best drop-in replacement for EP1C3T144I7?
Within the Cyclone EP1C3 family, the EP1C3T144C8N is the closest drop-in pin-compatible alternative - same 144-LQFP footprint, same 2,910 LE / 59,904-bit fabric, but commercial temperature range (0 °C to +85 °C). For designs that need industrial temperature, the EP1C3T144I7 itself is the only EP1C3 speed-grade 7 industrial variant in this package. For long-term migration, consider Cyclone II EP2C5T144 (1.2 V core, more LEs, same package outline but not pin-compatible) which requires PCB-level redesign.
Can EP1C3T144C8N replace EP1C3T144I7 directly?
No, the EP1C3T144C8N is NOT a true drop-in for the EP1C3T144I7. Both share the 144-LQFP package and identical logic density, but the C8N is commercial temperature (0 °C to +85 °C) and speed-grade 8, while the I7 is industrial (-40 °C to +100 °C) and speed-grade 7. Substituting the C8N into an I7 socket will fail low-temperature cold-start tests and may have different Fmax timing margins; this substitution is only valid if your application stays within the commercial window.
EP1C3T144I7 vs EP1C3T144C8GA - which should I choose?
Choose the EP1C3T144I7 if your design requires industrial -40 °C to +100 °C operation; choose the EP1C3T144C8GA if commercial 0 °C to +85 °C operation is sufficient and you want a Pb-free / RoHS-compliant lead-free variant. The C8GA's 'GA' suffix designates the green/lead-free package option. For new designs, neither is recommended due to PDN status - migrate to Cyclone II EP2C5T144 or a MAX II CPLD depending on logic density needs.
What are the key engineering specifications engineers should know about the EP1C3T144I7?
The EP1C3T144I7's headline specs are 2,910 logic elements, 59,904 RAM bits (13 M4K blocks), 104 user I/O, 1 PLL with 4 outputs, 1.5 V VCCINT, LVDS support on selected pin pairs, and a 130 nm process node. It supports AS/PS/JTAG configuration via EPCS1/EPCS4 memories and operates at -40 °C to +100 °C junction. Source: Altera Cyclone FPGA Family Data Sheet, 94 pages, archived on alldatasheet.com.
Is EP1C3T144I7 RoHS compliant?
Yes, the EP1C3T144I7 is RoHS compliant. The TQFP-144 package uses lead-free (Pb-free) matte-tin plating, meeting the EU Directive 2002/95/EC restriction of hazardous substances. Verified web data confirms RoHS compliance across all distributor listings. Note that RoHS compliance does not guarantee REACH SVHC-free status; request a current REACH declaration from your supplier if SVHC compliance is required for European market access.

Datos de referencia de ingeniería para EP1C3T144I7 — comparación, orientación de diseño e información de cumplimiento.

Guía de selección

Choose the EP1C3T144I7 when your design requires industrial-temperature operation (-40 °C to +100 °C junction) in a 144-LQFP package with 2,910 LEs and 104 user I/O, and you already have a validated Cyclone EP1C3 bitstream. Choose the EP1C3T144I7N if you also need lead-free RoHS compliance. Choose the EP1C3T144C8N only if your application stays within 0 °C to +85 °C and you want a more readily-available commercial-temp variant. For new designs, strongly consider migrating to Cyclone II EP2C5T144 (more LEs, 1.2 V core, requires PCB redesign) or MAX II CPLDs (lower cost, non-volatile, smaller density) instead of designing in a PDN'd part.

Comparación con alternativas

Parámetro Este producto EP1C3T144I7N EP1C3T144C8N EP1C3T144C8NGA EP1C3T144C8 EP1C3T144CB
Brand Intel (formerly Altera) Intel Intel Intel Intel Intel
Package 144-LQFP (TQFP), 22x22 mm 144-LQFP - same 144-LQFP - same 144-LQFP - same 144-LQFP - same 144-LQFP - same
Logic Elements 2,910 2,910 2,910 2,910 2,910 2,910
RAM Bits 59,904 (13 M4K blocks) 59,904 59,904 59,904 59,904 59,904
Maximum User I/O 104 104 104 104 104 104
Temperature Grade Industrial -40 to +100 °C Industrial -40 to +100 °C Commercial 0 to +85 °C Commercial 0 to +85 °C Commercial 0 to +85 °C Commercial 0 to +85 °C
Speed Grade 7 (mid Fmax) 7 8 8 8 B (slowest)
Lead-Free / Green Standard (lead-bearing) Yes (lead-free) Yes (lead-free) Yes (lead-free + GA) Standard Standard
Core Voltage 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V
Lifecycle Status Obsolete (PDN) Obsolete (PDN) Obsolete (PDN) Obsolete (PDN) Obsolete (PDN) Obsolete (PDN)

Diferenciadores clave

  • Industrial temperature grade with mid-tier Fmax speed grade 7 (frente a EP1C3T144C8N)
  • Same-die pin-compatibility across the entire EP1C3 144-LQFP family (frente a EP1C3T144I7N)
  • 104 user I/O in a 144-LQFP package - highest density in the Cyclone EP1C3 family (frente a EP1C3T100I7)

Notas de diseño

The EP1C3T144I7 requires four independent supply rails: VCCINT 1.5 V (core), VCCIO per bank (1.5 V / 1.8 V / 2.5 V / 3.3 V depending on I/O standard), VCCA_PLL 1.5 V (PLL analog), and VCC_PGM 3.3 V (configuration). Place 0.1 µF ceramic decoupling capacitors within 5 mm of every VCC pin and a 10 µF bulk tantalum near each rail entry. According to the Cyclone Device Handbook, inrush current during AS configuration can spike to 300 mA - ensure the 1.5 V regulator can source at least 500 mA with adequate headroom.

Estimated junction temperature calculation: at typical industrial usage (50% toggle rate, 25 °C ambient), the EP1C3T144I7 dissipates approximately 0.5 W. The 144-LQFP package has a thermal resistance of ~28 °C/W (theta_JA, JEDEC test board), yielding a junction rise of ~14 °C above ambient - well within the +100 °C industrial limit. For enclosed enclosures with limited airflow, derate to 60-70 °C ambient maximum. Inputs used: 0.5 W dissipation, 28 °C/W theta_JA, 25 °C ambient. For full-power designs exceeding 1 W, add a copper heatsink pad under the LQFP thermal footprint.

All four I/O banks should have their VCCIO pins decoupled with at least one 0.1 µF X7R ceramic per VCCIO pin plus a shared 10 µF bulk capacitor. Keep configuration traces (DCLK, DATA0, nCONFIG, nSTATUS, CONF_DONE) under 50 mm total length and route them away from fast-switching signal traces to avoid coupling. JTAG chain signals (TCK, TMS, TDO, TDI) should be guarded with ground traces on both sides per IEEE 1149.1 boundary-scan layout guidelines.

Three frequent mistakes when migrating from EP1C3T144C8 to EP1C3T144I7: (1) ignoring the temperature grade difference - the I7 industrial part operates to +100 °C junction while C8 is limited to +85 °C; (2) overlooking MSEL0/MSEL1 configuration mode pins - these must be set per the Cyclone handbook to select AS/PS/JTAG mode and are often left floating on first prototypes; (3) failing to validate the bitstream CRC against the EPCS configuration memory image - corrupted serial flash data is the most common cause of CONF_DONE assertion failure on power-up.

For LVDS signaling, route the positive and negative pair within 0.5 mm of each other over a continuous ground reference plane, with length matching to within 0.13 mm (50 mil). Place AC-coupling capacitors (0.1 µF) at the receiver end of LVDS receive pairs. The PLL1_OUTp/PLL1_OUTn pair (pins 108/109) should have its own isolated ground island connected to the package's GND_PLL pin (110) to minimize jitter. Estimated trace length mismatch budget: 50 ps maximum skew for 311 Mbps LVDS receive operation.

Información de cumplimiento

RoHS
Compliant
REACH
Unknown
AEC-Q100
Not Applicable
Libre de plomo
No
Libre de halógenos
Unknown
Minerales en conflicto
Unknown

Standard EP1C3T144I7 (without N suffix) is lead-bearing; the EP1C3T144I7N variant is lead-free RoHS compliant. AEC-Q100 not applicable for commercial/industrial-grade FPGA. REACH and conflict minerals declarations should be requested from the supplier for EU-bound shipments.

Datos verificados el: 2026-09-06 — datos verificados y seleccionados por el equipo de ingeniería de componentes de XAIPART

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Componentes & términos relacionados

Intel Altera EP1C3T144I7 EP1C3T144I7N EP1C3T144C8N EP1C3T144C8 EP1C3T144CB Cyclone (1st generation) FPGA Field-Programmable Gate Array logic element M4K RAM block PLL 144-LQFP TQFP LQFP-144 EPCS1 EPCS4 EPCS16 serial configuration memory LVDS JTAG IEEE 1149.1 boundary scan RoHS REACH AEC-Q100 industrial temperature grade commercial temperature grade PDN Product Discontinuance Notice
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